Rings D M, Rojko J
Cornell Vet. 1985 Apr;75(2):269-76.
Eleven adult sheep of various breeds were examined due to inspiratory dyspnea. Fiberoptic examinations conducted in 8 of the sheep revealed masses to be obstructing the nasal passages. Identification of the masses through histopathologic examination showed 7 to be adenocarcinomas, 1 a papillary adenoma, and 4 were cases of glandular hyperplasia with lymphoplasmacytic infiltration (nasal polyps). One ewe had both an adenocarcinoma and a polyp. Surgical removal of the masses was attempted on 6 of the sheep. Four of the 6 surgically-treated sheep have survived between 2 mo. - 2 years without recurrence of the obstruction.
11只不同品种的成年绵羊因吸气性呼吸困难接受检查。对其中8只绵羊进行的纤维光学检查显示有肿块阻塞鼻腔。通过组织病理学检查对肿块进行鉴定，结果显示7只为腺癌，1只为乳头状腺瘤，4例为伴有淋巴浆细胞浸润的腺体增生（鼻息肉）。1只母羊同时患有腺癌和息肉。对6只绵羊尝试进行肿块手术切除。6只接受手术治疗的绵羊中有4只存活了2个月至2年，阻塞未复发。
